Дисертації з теми "Large scale oscillations"
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Xu, Xiaoying. "Robust Measurement of the Cosmic Distance Scale Using Baryon Acoustic Oscillations." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/241935.
Повний текст джерелаSeo, Hee-Jong. "High-Precision Large-Scale Structure: The Baryon Acoustic Oscillations and Passive Flow." Diss., The University of Arizona, 2007. http://hdl.handle.net/10150/194697.
Повний текст джерелаShi, Guangyu. "Nonlinear static and dynamic analyses of large-scale lattice-type structures and nonlinear active control by piezo actuators." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/19176.
Повний текст джерелаComparat, Johan. "Baryonic acoustic oscillations with emission line galaxies at intermediate redshift : the large-scale structure of the universe." Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM4720/document.
Повний текст джерелаIn this PhD, I demonstrate the feasibility of the target selection for bright emission line galaxies. Also I now understand the main physical mechanisms driving the efficiency of a selection, in particular the relation to the parent photometry. A puzzling issue remains, I could not yet estimate quantitatively the impact of the dust on the selection efficiency. I hope to address this question with the data set described in chapter 4.Apart from the emission line galaxy target selection, I investigated, at first order, the two main systematic errors on the determination of the BAO scale we expect due to using emission line galaxies as tracers of the matter. First I showed the incompleteness in the redshift distribution, due to the measurement of the redshift with [Oii], is related to the instrumental resolution. I find there are two interesting regimes. For an observation of the brightest [Oii]emitters, a moderate resolution is sufficient, whereas for a fainter survey, the highest the resolution the best. Secondly, I estimated the linear galaxy bias of the selections discussed before and I find they are highly biased. On one hand, this is great news for the observers, as the time required to observed at a given signal to noise in the power spectrum decreases with the square of the bias. On the other hand, it constitutes a new challenge for reconstruction algorithms and the making of mock catalogs. The work in progress described in the last chapter shows I am starting to try and handle these questions in a robust manner
Molina, Diogenes. "Intelligent control and system aggregation techniques for improving rotor-angle stability of large-scale power systems." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/50291.
Повний текст джерелаBautista, Julian Ernesto. "Baryon acoustic oscillations in the large scale structures of the universe as seen by the Sloan Digital Sky Survey." Paris 7, 2014. http://www.theses.fr/2014PA077132.
Повний текст джерелаThis thesis describes the measurement of the baryon acoustic oscillations using Lyman-alpha forests and galaxies and its cosmological interprétation. From 2011 to 2014, the Sloan Digital Sky Survey III telescope observed spectra of — 1. 3 million galaxies and ∽ 150 000 quasars in the context of the Baryon Oscillation Spectroscopic Survey (BOSS). This project aimed the most accurate BAO measurement in the large scale distribution of matter. We describe the data analysis, the cosmological interprétation and tests using mock data. We present a new method to generate mock data, that was used to study systematic effects potentially affecting our measurement. No evidence for a systematic bias comming from these tests could be found. Using data available in 2014, the BAO peak is measured at 3% precision in the radial direction and 5% in the transverse direction, at z = 2. 34. We compare our results with previous measurements, in particular those from the Planck satellite, and we find an agreement at 1. 8ơ level
Ding, Zhejie. "Systematics Study and Detection of Baryon Acoustic Oscillations from Future Galaxy Survey and Weak Lensing Survey." Ohio University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1554330484538948.
Повний текст джерелаArico, Giovanni. "Testing the methods to reconstruct and model the Baryonic Acoustic Oscillations of different tracers using N-body simulations." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13167/.
Повний текст джерелаDisotell, Kevin James. "Low-Frequency Flow Oscillations on Stalled Wings Exhibiting Cellular Separation Topology." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1449162356.
Повний текст джерелаPockberger, Moritz [Verfasser]. "Abiotic and biotic impacts on fish in the Wadden Sea - evaluating the effect of large scale climate oscillations, local ecosystem characteristics and invasive species / Moritz Pockberger." Kiel : Universitätsbibliothek Kiel, 2016. http://d-nb.info/1094661953/34.
Повний текст джерелаLabatie, Antoine. "Etude statistique des corrélations dans la distribution des galaxies - application aux oscillations baryoniques acoustiques." Phd thesis, Université Paris Sud - Paris XI, 2012. http://tel.archives-ouvertes.fr/tel-00785091.
Повний текст джерелаDu, Mas des Bourboux Hélion. "Mesure de l'échelle des oscillations acoustiques de baryons dans la fonction de corrélation des forêts Lyman-α avec la distribution des quasars observés dans le relevé SDSS". Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS157/document.
Повний текст джерелаThe acoustic wave propagation in the primordial plasma left its imprint in the two-point correlation function of the matter density field. This baryonic acoustic oscillation (BAO) peak builds up a standard ladder allowing us to infer some parameters of the different cosmological models.In this thesis manuscript we present an update of the BAO measurement at a redshift z=2.40, from the cross-correlation function between two tracers of the primordial matter density fluctuations: quasars of SDSS-III (BOSS) and their Lyman-α-forest absorption fluctuations. These fluctuations trace the neutral hydrogen distribution in the intergalactic medium (IGM).This study gives the first developpment of the full physical fit of the cross-correlation. Among other effects, it takes into account quasar physics and the distribution of IGM elements heavier than hydrogen. We also present the first simulations of our analysis. They allow us to validate the overall data analysis leading to the BAO measurement.This study measures the Hubble distance and the angular diameter distance at the 2%$ and 3%$ precision level respectivelly (1 σ interval). We combine our results with other BAO measurements at lower redshifts and find the dark matter density and dark energy density in the framework of two different cosmological models: ΛCDM et oΛCDM
Wallisch, Benjamin. "Cosmological probes of light relics." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283003.
Повний текст джерелаBurton, Kenneth R. Jr. "Influence of Antarctic oscillation on intraseasonal variability of large-scale circulations over the Western North Pacific." Thesis, Monterey California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/2310.
Повний текст джерелаThis study examines Southern Hemisphere mid-latitude wave variations connected to the Antarctic Oscillation (AAO) to establish connections with the 15- to 25-day wave activity in the western North Pacific monsoon trough region. The AAO index defined from the leading empirical orthogonal functions of 700 hPa height anomalies led to seven distinct circulation patterns that vary in conjunction with the 15- to 25-day monsoon trough mode. For nearly one half of the significant events the onset of 15- to 25-day monsoon trough convective activity coincided with a peak negative AAO index and the peak in monsoon trough convection coincided with a peak positive index. The remaining events either occur when the AAO is not significantly varying or when the AAO-related Southern Hemisphere mid-latitude circulations do not match 15- to 25-day transitions. When a significant connection occurs between the Southern Hemisphere mid-latitude circulations related to the AAO and the 15- to 25-day wave activity in the western North Pacific monsoon trough, the mechanism is via equatorward Rossby-wave dispersion. When wave energy flux in the Southern Hemisphere is directed zonally, no connection is established between the AAO and the alternating periods of enhanced and reduced convection in the western North Pacific monsoon trough.
Captain, United States Air Force
Burton, Kenneth R. "Influence of Antarctic oscillation on intraseasonal variability of large-scale circulations over the Western North Pacific /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Mar%5FBurton.pdf.
Повний текст джерелаMagazzini, Lorenzo. "Quality control of visual gamma oscillation frequency in studies of pharmacology, cognitive neuroscience and large-scale multi-site collaborations." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/98613/.
Повний текст джерелаHerzberg, Wiebke [Verfasser], and Markus [Akademischer Betreuer] Roth. "Effects of large-scale poloidal flows on oscillation modes of subgiant stars and the Sun / Wiebke Herzberg ; Betreuer: Markus Roth." Freiburg : Albert-Ludwigs-Universität Freiburg, 2016. http://d-nb.info/1126920746/34.
Повний текст джерелаKuznetsova, Daria. "Modélisation de l'oscillation Madden-Julian lors de son passage sur l'océan Indien et le continent maritime." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30220/document.
Повний текст джерелаThe Madden-Julian Oscillation (MJO) is the dominant component of the intraseasonal variability in the tropical atmosphere, propagating eastward in the equatorial band. It consists of a convective center (active phase) accompanied by the low-level zonal wind anomaly convergence and the upper-level zonal wind anomaly divergence, and zones of weak convection (suppressed phases). Three time periods of the MJO activity over the Indian Ocean and the Maritime Continent were chosen: 6-14 April 2009, 23-30 November 2011, and 9-28 February 2013. The simulations with and without convective parameterizations were performed for a large domain with the atmospheric model Méso-NH. It was obtained that the simulations with parameterized convection were not able to reproduce an MJO signal. For 2009 and 2011 when the coupling between convection and large-scale circulation was strong, the convection-permitting simulations showed a visible MJO propagation, which was not the case for 2013. For the 2011 episode, the processes contributing to the suppression of the convection were studied using an isentropic analysis to separate the ascending air masses with high equivalent potential temperature from the subsiding air masses with low equivalent potential temperature. Three large-scale circulations were found: a tropospheric circulation, an overshoot circulation within the tropical tropopause layer, and a circulation of air masses with low equivalent potential temperature in the lower troposphere. The latter corresponds to the large-scale dry air intrusions from the subtropical zones into the equatorial band, mostly found during the suppressed MJO phase over the Indian Ocean
Schmeling, Daniel. "Experimental Acquisition and Characterisation of Large-Scale Flow Structures in Turbulent Mixed Convection." Thesis, 2014. http://hdl.handle.net/11858/00-1735-0000-0022-5F32-8.
Повний текст джерелаRiese, Michael. "Study of large-scale coherent structures in the near field and transition regions of a mechanically oscillated planar jet." 2009. http://hdl.handle.net/2440/54150.
Повний текст джерелаhttp://proxy.library.adelaide.edu.au/login?url= http://library.adelaide.edu.au/cgi-bin/Pwebrecon.cgi?BBID=1349701
Thesis (Ph.D.) -- University of Adelaide, School of Mechanical Engineering, 2009
Maity, Rajib. "Impact Of Large-Scale Coupled Atmospheric-Oceanic Circulation On Hydrologic Variability And Uncertainty Through Hydroclimatic Teleconnection." Thesis, 2007. http://hdl.handle.net/2005/721.
Повний текст джерелаReaume, Jonathan Daniel. "Wave-Cavity Resonator: Experimental Investigation of an Alternative Energy Device." Thesis, 2015. http://hdl.handle.net/1828/6960.
Повний текст джерелаGraduate
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reaumejd@uvic.ca